<template>
    <div class="wrapper">
      <!-- header部分 -->
      <header>
        <div class="icon-location-box">
          <div class="icon-location"></div>
        </div>
        <div class="location-text">
          沈阳市规划大厦<i class="fa fa-caret-down"></i>
        </div>
      </header>
  
      <!-- search部分 -->
      <!-- 
                      搜索框部分（此块与search-fixed-top块宽度高度一致，用于当
                      search-fixed-top块固定后，挡住下面块不要窜上去） 
                  -->
      <div class="search">
        <!-- 当滚动条超过上面的定位块时，search-fixed-top块变成固定在顶部。 -->
        <div class="search-fixed-top" ref="fixedBox">
          <!-- 搜索框部分中间的白框 -->
          <div class="search-box">
            <i class="fa fa-search"></i>搜索饿了么商家、商品名称
          </div>
        </div>
      </div>
  
      <!-- 点餐分类部分 -->
      <ul class="foodtype">
        <li @click="toBusinessList(1)">
          <img src="../assets/logo.png" />
          <p>美食</p>
        </li>
        <li @click="toBusinessList(2)">
          <img src="../assets/logo.png" />
          <p>早餐</p>
        </li>
        <li @click="toBusinessList(3)">
          <img src="../assets/logo.png" />
          <p>跑腿代购</p>
        </li>
        <li @click="toBusinessList(4)">
          <img src="../assets/logo.png" />
          <p>汉堡披萨</p>
        </li>
        <li @click="toBusinessList(5)">
          <img src="../assets/logo.png" />
          <p>甜品饮品</p>
        </li>
        <li @click="toBusinessList(6)">
          <img src="../assets/logo.png" />
          <p>速食简餐</p>
        </li>
        <li @click="toBusinessList(7)">
          <img src="../assets/logo.png" />
          <p>地方小吃</p>
        </li>
        <li @click="toBusinessList(8)">
          <img src="../assets/logo.png" />
          <p>米粉面馆</p>
        </li>
        <li @click="toBusinessList(9)">
          <img src="../assets/logo.png" />
          <p>包子粥铺</p>
        </li>
        <li @click="toBusinessList(10)">
          <img src="../assets/logo.png" />
          <p>炸鸡炸串</p>
        </li>
      </ul>
  
      <!-- 横幅广告部分（注意：此处有背景图片） -->
      <div class="banner">
        <h3>品质套餐</h3>
        <p>搭配齐全吃得好</p>
        <a>立即抢购 &gt;</a>
      </div>
  
      <!-- 超级会员部分 -->
      <div class="supermember">
        <div class="left">
          <img src="../assets/logo.png" />
          <h3>超级会员</h3>
          <p>&#8226; 每月享超值权益</p>
        </div>
        <div class="right">立即开通 &gt;</div>
      </div>
  
      <!-- 推荐商家部分 -->
      <div class="recommend">
        <div class="recommend-line"></div>
        <p>推荐商家</p>
        <div class="recommend-line"></div>
      </div>
  
      <!-- 推荐方式部分 -->
      <ul class="recommendtype">
        <li>综合排序<i class="fa fa-caret-down"></i></li>
        <li>距离最近</li>
        <li>销量最高</li>
        <li>筛选<i class="fa fa-filter"></i></li>
      </ul>
  
      <!-- 推荐商家列表部分 -->
      <ul class="business">
        <li>
          <img src="../assets/logo.png" />
          <div class="business-info">
            <div class="business-info-h">
              <h3>万家饺子（软件园E18店）</h3>
              <div class="business-info-like">&#8226;</div>
            </div>
            <div class="business-info-star">
              <div class="business-info-star-left">
                <i class="fa fa-star"></i>
                <i class="fa fa-star"></i>
                <i class="fa fa-star"></i>
                <i class="fa fa-star"></i>
                <i class="fa fa-star"></i>
                <p>4.9 月售345单</p>
              </div>
              <div class="business-info-star-right">蜂鸟专送</div>
            </div>
            <div class="business-info-delivery">
              <p>&#165;15起送 | &#165;3配送</p>
              <p>3.22km | 30分钟</p>
            </div>
            <div class="business-info-explain">
              <div>各种饺子</div>
            </div>
            <div class="business-info-promotion">
              <div class="business-info-promotion-left">
                <div class="business-info-promotion-left-incon">新</div>
                <p>饿了么新用户首单立减9元</p>
              </div>
              <div class="business-info-promotion-right">
                <p>2个活动</p>
                <i class="fa fa-caret-down"></i>
              </div>
            </div>
            <div class="business-info-promotion">
              <div class="business-info-promotion-left">
                <div
                  class="business-info-promotion-left-incon"
                  style="background-color: #f1884f"
                >
                  特
                </div>
                <p>特价商品5元起</p>
              </div>
            </div>
          </div>
        </li>
        <li>
          <img src="../assets/logo.png" />
          <div class="business-info">
            <div class="business-info-h">
              <h3>小锅饭豆腐馆（全运店）</h3>
              <div class="business-info-like">&#8226;</div>
            </div>
            <div class="business-info-star">
              <div class="business-info-star-left">
                <i class="fa fa-star"></i>
                <i class="fa fa-star"></i>
                <i class="fa fa-star"></i>
                <i class="fa fa-star"></i>
                <i class="fa fa-star"></i>
                <p>4.9 月售345单</p>
              </div>
              <div class="business-info-star-right">蜂鸟专送</div>
            </div>
            <div class="business-info-delivery">
              <p>&#165;15起送 | &#165;3配送</p>
              <p>3.22km | 30分钟</p>
            </div>
            <div class="business-info-explain">
              <div>各种饺子</div>
            </div>
            <div class="business-info-promotion">
              <div class="business-info-promotion-left">
                <div class="business-info-promotion-left-incon">新</div>
                <p>饿了么新用户首单立减9元</p>
              </div>
              <div class="business-info-promotion-right">
                <p>2个活动</p>
                <i class="fa fa-caret-down"></i>
              </div>
            </div>
            <div class="business-info-promotion">
              <div class="business-info-promotion-left">
                <div class="business-info-promotion-left-incon">特</div>
                <p>特价商品5元起</p>
              </div>
            </div>
          </div>
        </li>
        <li>
          <img src="../assets/logo.png" />
          <div class="business-info">
            <div class="business-info-h">
              <h3>麦当劳麦乐送（全运路店）</h3>
              <div class="business-info-like">&#8226;</div>
            </div>
            <div class="business-info-star">
              <div class="business-info-star-left">
                <i class="fa fa-star"></i>
                <i class="fa fa-star"></i>
                <i class="fa fa-star"></i>
                <i class="fa fa-star"></i>
                <i class="fa fa-star"></i>
                <p>4.9 月售345单</p>
              </div>
              <div class="business-info-star-right">蜂鸟专送</div>
            </div>
            <div class="business-info-delivery">
              <p>&#165;15起送 | &#165;3配送</p>
              <p>3.22km | 30分钟</p>
            </div>
            <div class="business-info-explain">
              <div>各种饺子</div>
            </div>
            <div class="business-info-promotion">
              <div class="business-info-promotion-left">
                <div class="business-info-promotion-left-incon">新</div>
                <p>饿了么新用户首单立减9元</p>
              </div>
              <div class="business-info-promotion-right">
                <p>2个活动</p>
                <i class="fa fa-caret-down"></i>
              </div>
            </div>
            <div class="business-info-promotion">
              <div class="business-info-promotion-left">
                <div class="business-info-promotion-left-incon">特</div>
                <p>特价商品5元起</p>
              </div>
            </div>
          </div>
        </li>
        <li>
          <img src="../assets/logo.png" />
          <div class="business-info">
            <div class="business-info-h">
              <h3>米村拌饭（浑南店）</h3>
              <div class="business-info-like">&#8226;</div>
            </div>
            <div class="business-info-star">
              <div class="business-info-star-left">
                <i class="fa fa-star"></i>
                <i class="fa fa-star"></i>
                <i class="fa fa-star"></i>
                <i class="fa fa-star"></i>
                <i class="fa fa-star"></i>
                <p>4.9 月售345单</p>
              </div>
              <div class="business-info-star-right">蜂鸟专送</div>
            </div>
            <div class="business-info-delivery">
              <p>&#165;15起送 | &#165;3配送</p>
              <p>3.22km | 30分钟</p>
            </div>
            <div class="business-info-explain">
              <div>各种饺子</div>
            </div>
            <div class="business-info-promotion">
              <div class="business-info-promotion-left">
                <div class="business-info-promotion-left-incon">新</div>
                <p>饿了么新用户首单立减9元</p>
              </div>
              <div class="business-info-promotion-right">
                <p>2个活动</p>
                <i class="fa fa-caret-down"></i>
              </div>
            </div>
            <div class="business-info-promotion">
              <div class="business-info-promotion-left">
                <div class="business-info-promotion-left-incon">特</div>
                <p>特价商品5元起</p>
              </div>
            </div>
          </div>
        </li>
        <li>
          <img src="../assets/logo.png" />
          <div class="business-info">
            <div class="business-info-h">
              <h3>申记串道（中海康城店）</h3>
              <div class="business-info-like">&#8226;</div>
            </div>
            <div class="business-info-star">
              <div class="business-info-star-left">
                <i class="fa fa-star"></i>
                <i class="fa fa-star"></i>
                <i class="fa fa-star"></i>
                <i class="fa fa-star"></i>
                <i class="fa fa-star"></i>
                <p>4.9 月售345单</p>
              </div>
              <div class="business-info-star-right">蜂鸟专送</div>
            </div>
            <div class="business-info-delivery">
              <p>&#165;15起送 | &#165;3配送</p>
              <p>3.22km | 30分钟</p>
            </div>
            <div class="business-info-explain">
              <div>各种饺子</div>
            </div>
            <div class="business-info-promotion">
              <div class="business-info-promotion-left">
                <div class="business-info-promotion-left-incon">新</div>
                <p>饿了么新用户首单立减9元</p>
              </div>
              <div class="business-info-promotion-right">
                <p>2个活动</p>
                <i class="fa fa-caret-down"></i>
              </div>
            </div>
            <div class="business-info-promotion">
              <div class="business-info-promotion-left">
                <div class="business-info-promotion-left-incon">特</div>
                <p>特价商品5元起</p>
              </div>
            </div>
          </div>
        </li>
      </ul>
  
      <!-- 底部菜单部分 -->
      <Footer></Footer>
    </div>
  </template>
  
  <script setup>
  import Footer from "../components/Footer.vue";
  import { ref, onMounted, onUnmounted } from "vue";
  import { useRouter } from "vue-router";
  
  const router = useRouter();
  const fixedBox = ref(null);
  
  onMounted(() => {
    document.onscroll = () => {
      //获取滚动条位置
      let s1 = document.documentElement.scrollTop;
      let s2 = document.body.scrollTop;
      let scroll = s1 == 0 ? s2 : s1;
      //获取视口宽度
      let width = document.documentElement.clientWidth;
  
      //获取顶部固定块
      let search = fixedBox.value;
  
      //判断滚动条超过视口宽度的12%时，搜索块变固定定位
      if (scroll > width * 0.12) {
        search.style.position = "fixed";
        search.style.left = "0";
        search.style.top = "0";
      } else {
        search.style.position = "static";
      }
    };
  });
  
  onUnmounted(() => {
    //当切换到其他组件时，就不需要document滚动条事件，所以将此事件去掉
    document.onscroll = null;
  })
  
  const toBusinessList = (orderTypeId) => {
    router.push({
      path: "/businessList",
      query: { orderTypeId: orderTypeId },
    });
  };
  </script>
  
  <style scoped>
  /****************** 总容器 ******************/
  .wrapper {
    width: 100%;
    height: 100%;
  }
  
  /****************** header ******************/
  .wrapper header {
    width: 100%;
    height: 12vw;
    background-color: #0097ff;
  
    display: flex;
    align-items: center;
  }
  
  .wrapper header .icon-location-box {
    width: 3.5vw;
    height: 3.5vw;
    margin: 0 1vw 0 3vw;
  }
  
  .wrapper header .location-text {
    font-size: 4.5vw;
    font-weight: 700;
    color: #fff;
  }
  
  .wrapper header .location-text .fa-caret-down {
    margin-left: 1vw;
  }
  
  /****************** search ******************/
  .wrapper .search {
    width: 100%;
    height: 13vw;
  }
  
  .wrapper .search .search-fixed-top {
    width: 100%;
    height: 13vw;
    background-color: #0097ff;
    display: flex;
    justify-content: center;
    align-items: center;
  }
  
  .wrapper .search .search-fixed-top .search-box {
    width: 90%;
    height: 9vw;
    background-color: #fff;
    border-radius: 2px;
  
    display: flex;
    justify-content: center;
    align-items: center;
  
    font-size: 3.5vw;
    color: #aeaeae;
    font-family: "宋体";
    /*此样式是让文本选中状态无效*/
    user-select: none;
  }
  
  .wrapper .search .search-fixed-top .search-box .fa-search {
    margin-right: 1vw;
  }
  
  /****************** 点餐分类部分 ******************/
  .wrapper .foodtype {
    width: 100%;
    height: 48vw;
  
    display: flex;
    flex-wrap: wrap;
    justify-content: space-around;
    /*要使用align-content。10个子元素将自动换行为两行，而且两行作为一个整体垂直居中*/
    align-content: center;
  }
  
  .wrapper .foodtype li {
    /*一共10个子元素，通过计算，子元素宽度在16.7 ~ 20 之间，才能保证换两行*/
    width: 18vw;
    height: 20vw;
  
    display: flex;
    /*弹性盒子主轴方向设为column，然后仍然是垂直水平方向居中*/
    flex-direction: column;
    justify-content: center;
    align-items: center;
  
    user-select: none;
    cursor: pointer;
  }
  
  .wrapper .foodtype li img {
    width: 12vw;
    /*视频讲解时高度设置为12vw，实际上设置为10.3vw更佳*/
    height: 10.3vw;
  }
  
  .wrapper .foodtype li p {
    font-size: 3.2vw;
    color: #666;
  }
  
  /****************** 横幅广告部分 ******************/
  .wrapper .banner {
    /**
           * 设置容器宽度95%，然后水平居中，这样两边留白; 
           * 这里不能用padding，因为背景图片也会覆盖padding
           */
    width: 95%;
    margin: 0 auto;
    height: 29vw;
  
    /*此三个样式组合，可以保证背景图片充满整个容器*/
    background-image: url(../assets/logo.png);
    background-repeat: no-repeat;
    background-size: cover;
  
    box-sizing: border-box;
    padding: 2vw 6vw;
  }
  
  .wrapper .banner h3 {
    font-size: 4.2vw;
    margin-bottom: 1.2vw;
  }
  
  .wrapper .banner p {
    font-size: 3.4vw;
    color: #666;
    margin-bottom: 2.4vw;
  }
  
  .wrapper .banner a {
    font-size: 3vw;
    color: #c79060;
    font-weight: 700;
  }
  
  /****************** 超级会员部分 ******************/
  .wrapper .supermember {
    /*这里也设置容器宽度95%，不能用padding，因为背景色也会充满padding*/
    width: 95%;
    margin: 0 auto;
    height: 11.5vw;
    background-color: #feedc1;
    margin-top: 1.3vw;
    border-radius: 2px;
    color: #644f1b;
  
    display: flex;
    justify-content: space-between;
    align-items: center;
  }
  
  .wrapper .supermember .left {
    display: flex;
    align-items: center;
    margin-left: 4vw;
    user-select: none;
  }
  
  .wrapper .supermember .left img {
    width: 6vw;
    height: 6vw;
    margin-right: 2vw;
  }
  
  .wrapper .supermember .left h3 {
    font-size: 4vw;
    margin-right: 2vw;
  }
  
  .wrapper .supermember .left p {
    font-size: 3vw;
  }
  
  .wrapper .supermember .right {
    font-size: 3vw;
    margin-right: 4vw;
    cursor: pointer;
  }
  
  /****************** 推荐商家部分 ******************/
  .wrapper .recommend {
    width: 100%;
    height: 14vw;
    display: flex;
    justify-content: center;
    align-items: center;
  }
  
  .wrapper .recommend .recommend-line {
    width: 6vw;
    height: 0.2vw;
    background-color: #888;
  }
  
  .wrapper .recommend p {
    font-size: 4vw;
    margin: 0 4vw;
  }
  
  /****************** 推荐方式部分 ******************/
  .wrapper .recommendtype {
    width: 100%;
    height: 5vw;
    margin-bottom: 5vw;
  
    display: flex;
    justify-content: space-around;
    align-items: center;
  }
  
  .wrapper .recommendtype li {
    font-size: 3.5vw;
    color: #555;
  }
  
  /****************** 推荐商家列表部分 ******************/
  .wrapper .business {
    width: 100%;
    margin-bottom: 14vw;
  }
  
  .wrapper .business li {
    width: 100%;
    box-sizing: border-box;
    padding: 2.5vw;
    user-select: none;
    border-bottom: solid 1px #ddd;
  
    display: flex;
  }
  
  .wrapper .business li img {
    width: 18vw;
    height: 18vw;
  }
  
  .wrapper .business li .business-info {
    width: 100%;
    box-sizing: border-box;
    padding-left: 3vw;
  }
  
  .wrapper .business li .business-info .business-info-h {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2vw;
  }
  
  .wrapper .business li .business-info .business-info-h h3 {
    font-size: 4vw;
    color: #333;
  }
  
  .wrapper .business li .business-info .business-info-h .business-info-like {
    width: 1.6vw;
    height: 3.4vw;
    background-color: #666;
    color: #fff;
    font-size: 4vw;
    margin-right: 4vw;
  
    display: flex;
    justify-content: center;
    align-items: center;
  }
  
  .wrapper .business li .business-info .business-info-star {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2vw;
    font-size: 3.1vw;
  }
  
  .wrapper
    .business
    li
    .business-info
    .business-info-star
    .business-info-star-left {
    display: flex;
    align-items: center;
  }
  
  .wrapper
    .business
    li
    .business-info
    .business-info-star
    .business-info-star-left
    .fa-star {
    color: #fec80e;
    margin-right: 0.5vw;
  }
  
  .wrapper
    .business
    li
    .business-info
    .business-info-star
    .business-info-star-left
    p {
    color: #666;
    margin-left: 1vw;
  }
  
  .wrapper
    .business
    li
    .business-info
    .business-info-star
    .business-info-star-right {
    background-color: #0097ff;
    color: #fff;
    font-size: 2.4vw;
    border-radius: 2px;
    padding: 0 0.6vw;
  }
  
  .wrapper .business li .business-info .business-info-delivery {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2vw;
  
    color: #666;
    font-size: 3.1vw;
  }
  
  .wrapper .business li .business-info .business-info-explain {
    display: flex;
    align-items: center;
    margin-bottom: 3vw;
  }
  
  .wrapper .business li .business-info .business-info-explain div {
    border: solid 1px #ddd;
    font-size: 2.8vw;
    color: #666;
    border-radius: 3px;
    padding: 0 0.1vw;
  }
  
  .wrapper .business li .business-info .business-info-promotion {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.8vw;
  }
  
  .wrapper
    .business
    li
    .business-info
    .business-info-promotion
    .business-info-promotion-left {
    display: flex;
    align-items: center;
  }
  
  .wrapper
    .business
    li
    .business-info
    .business-info-promotion
    .business-info-promotion-left
    .business-info-promotion-left-incon {
    width: 4vw;
    height: 4vw;
    background-color: #70bc46;
    border-radius: 3px;
    font-size: 3vw;
    color: #fff;
  
    display: flex;
    justify-content: center;
    align-items: center;
  }
  
  .wrapper
    .business
    li
    .business-info
    .business-info-promotion
    .business-info-promotion-left
    p {
    color: #666;
    font-size: 3vw;
    margin-left: 2vw;
  }
  
  .wrapper
    .business
    li
    .business-info
    .business-info-promotion
    .business-info-promotion-right {
    display: flex;
    align-items: center;
    font-size: 2.5vw;
    color: #999;
  }
  
  .wrapper
    .business
    li
    .business-info
    .business-info-promotion
    .business-info-promotion-right
    p {
    margin-right: 2vw;
  }
  </style>